diff --git a/scripts/daemon/lesavka-core.sh b/scripts/daemon/lesavka-core.sh
index f982fb8..b59295a 100644
--- a/scripts/daemon/lesavka-core.sh
+++ b/scripts/daemon/lesavka-core.sh
@@ -5,6 +5,8 @@
 #            • Stereo UAC2 speaker + microphone
 set -euo pipefail
 
+log() { printf '[lesavka-core] %s\n' "$*"; }
+
 #──────────────────────────────────────────────────
 # 1.  Ensure overlay + kernel modules
 #──────────────────────────────────────────────────
@@ -24,7 +26,7 @@ udevadm settle
 #──────────────────────────────────────────────────
 # 2.  Wait for UDC device to appear (max 10 s)
 #──────────────────────────────────────────────────
-echo "[lesavka-core] ⏳ waiting for UDC to register ..."
+log "⏳ waiting for UDC to register ..."
 UDC=""
 for _ in {1..100}; do                       # 100 × 100ms = 10s
     UDC=$(ls /sys/class/udc 2>/dev/null | head -n1) && [[ -n $UDC ]] && break
@@ -32,12 +34,12 @@ for _ in {1..100}; do                       # 100 × 100ms = 10s
 done
 
 if [[ -z $UDC ]]; then
-    echo "[lesavka-core] ⚠️  UDC still absent - trying manual bind"
+    log "⚠️  UDC still absent - trying manual bind"
     for drv in dwc2 dwc3; do
         drv_root="/sys/bus/platform/drivers/$drv"
         [[ -d $drv_root ]] || continue
         for node in /sys/bus/platform/devices/*usb*; do
-            node=${node##*/}               # strip path → “1000480000.usb”
+            node=${node##*/}               # strip path
             echo "$node" >"$drv_root/bind" 2>/dev/null || continue
         done
     done
@@ -48,8 +50,8 @@ if [[ -z $UDC ]]; then
     done
 fi
 
-[[ -n $UDC ]] || { echo "❌ UDC not present after manual bind"; exit 1; }
-echo "[lesavka-core] ✅ UDC detected: $UDC"
+[[ -n $UDC ]] || { log "❌ UDC not present after manual bind"; exit 1; }
+log "✅ UDC detected: $UDC"
 
 #──────────────────────────────────────────────────
 # 3.  (Re‑)create gadget